AutoCodes – Dodge – P1593 Dodge

P1593 Dodge Code - Speed Control Switch 1/2 Stuck

Quick Answer

The Powertrain Control Module (PCM) detects that the Speed Control Switch signal voltage receive over the bus is no plausible. Common causes include Faulty Speed Control Switch, Speed Control Switch harness is open or shorted, Speed Control Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1593 Dodge indicates Speed Control Switch 1/2 Stuck.
Common causes: Common causes include Faulty Speed Control Switch, Speed Control Switch harness is open or shorted, Speed Control Switch circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 27,302

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1593 Dodge Description

The Powertrain Control Module (PCM) detects that the Speed Control Switch signal voltage receive over the bus is no plausible.

OBDII Code P1593 Dodge - Speed Control Switch 1/2 Stuck - AutoCodes.com — P1593 Dodge Code - Speed Control Switch 1/2 Stuck

What does this mean?

What are the Possible Causes of the DTC P1593 Dodge?

Faulty Speed Control Switch
Speed Control Switch harness is open or shorted
Speed Control Switch circuit poor electrical connection

How to Fix the DTC P1593 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1593 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.